Revolving cutter



(No Model.) 3 Sheets-Sheet 1. C. A. TH. REVOLVI UTTER.-

No. 555,468. Patented Feb. 25, 1896'.

(No Model.)

3 Sheets-Sheet 3. v 0, A. SMITH. REVOLVING CUTTER.

- No. 555,468. Patented Feb. 25, 1896.

1 UNITED STATES I PATENT OFFICE.

CURTIS A. SMITH, or ELGIN, ASSIGNOR TO THE ELGIN NATIONAL WATCH COMPANY,or CHICAGO, ILLINOIS.

REVOLVING CUTTER.

SPECIFICATION forming part of Letters Patent No. 555,468, dated February25, 1896. Application filed October 18, 1893. Serial No. 488,084. (Nomodel.)

To all whom, it may concern.-

- Be it known that I, CURTIS A. SMITH, of Elgin, in the county of Kane,and in the State of Illinois, have invented certain new and usefulImprovements' in Revolving Cutters and I do hereby declare that thefollowing is a full, clear, and exact description thereof, referencebeing had to the accompanying drawings, in which- Figure 1 is aperspective View, from the upper side, of my tool detached from itsspindle. 2 is a like view of the same from the lower side. Fig. 3 is aplan View of the tool from the upper side, the cutter being detached.Fig. 4 is a side elevation of said tool from the pawl side. Fig. 5 is afront elevation of the same. Fig. 6 is a horizontal section of the frontportion of the tool. Fig. 7 is a vertical longitudinal section of thesame and of the engaging portion of the operatingspindle; Fig. 8, an endelevation of the rotatable head of a jewel-setting machine with my toolapplied thereto, and Fig. 9 an end view of the same.

Letters of like name and kind refer to like parts in the. severalfigures.

The design of my invention is to increase the efficiency and to insuregreater accuracy of and uniformity in the action of cutters forautomatic mechanism; and to such end my said invention consists in arevoluble cutting device, substantially as and for the purposehereinafter specified.

In the carrying of my invention into practice I employ a circular cutterA, which has a central opening a and at its edge is beveled so as toform around its entire periphery a cutting-edge a, as shown. For thesupport of such cutter I employ a head B that has substantially the formof a disk, and upon one edge is provided with a tapering shank b that isadapted to fill a correspondingly-shaped socket c, which is formed inthe end of a spindle 0.

Within the head B, at or near its center, is journaled an arbor D thatupon its lower end is provided with a worm-wheel d, and has its upperportion threaded to receive a nut E, while between said nut and ashoulder d that is slightly above the face of said head said arbor isadapted to receive the cutter A,which -ments of the lever I.

is thus secured in place by means of said nut and is rotated with saidarbor.

Journaled within a suitable housing F, upon the lower side of the head13, is a worm-shaft G, which is arranged transversely and engages withthe wheel d, and upon one of its. ends, which projects beyond the sideof the head, has secured a disk H that is provided upon its outer facewith a series of ratchetteeth 77. and h. Outside of such ratchet-disk isjournaled the hub 2' of a lever I, which hub is held in place by meansof a screw K that passes' into an axial threaded opening in the end ofsaid worm-shaft, the arrangement being such as to enable said lever tobe turned freely upon such shaft.

The inner end of the hub 'L' is squared, and upon the same is looselyfitted a disk L, which corresponds in size to the disk H, and isprovided upon its inner face with a series of ratchet-teeth Z and Z,that are the opposite of the teeth h and h, and are adapted to engagewith or trip over the latter when said disk L is turned in oppositedirections by the move- The ratchet-disks are inclosed by means of a capI), that is secured upon a concentric housing 12 and between such capand the outer disk L is placed a spring M, which operates to hold thelatter with a yielding force in engagement with said disk and to produceratchet action between said disks whenever said lever is moved to andfro upon its pivotal bearing.

7 The front end of the head B being cut away, as shown, so as to giveclearance to the cutter A at such point, the tool is ready for use, asfollows, viz: When the tool is to be moved toward and from the work ateach operation, a notched piece N is secured to some relativelystationary part of the machine in position to enable the free end of thelever I to be loosely contained within the notch n, when at each forwardor backward movement of said tool the ratchet-disk L will engage withthe disk H and give to the same, the worm-shaft g, the wheel d, theshaft D, and the cutter A a partial rotation, so as to cause a differentportion of the cutting-edge a to be presented for action each time.Should the tool remain stationary while at work, it .will then benecessary to give to the ratchet-lever the necessary movements by any ofthe usual means for producing a vibratory motion.

The worm-wheel d is preferably inclosed by a housing 0, and forconvenience in setting the tool I journal the worm-wheel arbor D withina block P, which is contained in an elongated slot 12 in the head 13 andis adapted to be adjusted laterally to and secured in position by meansof two set-screws Q and Q, that pass through threaded openings in saidhead and engage with the ends of said block.

The spindle O to which I have shown the tool attached is alongitudinally reciprocable one mounted in a head R-such as is shown inthe jewel setting-machine covered by the application of George E.Hunter, No. 488,086, filed October 13, l893-which head carries otherspindles for holding other tools that are adapted by its step-by-steprotation to be successively placed in position for operation.

The first tool brought into action is a drill and end cutter S thatforms the jewel-openin g in a blank and squares the end of the latter. Apartial rotation of the head R now brings the spindle containing ajewel-holder T into position opposite said blank, whereupon a jewel isautomatically fed into the opening, after which said head is givenanother partial rotation and moves into position the third spindle,which carries on its end a burnishing-tool U. The fourth spindle carriesmy cutter, which, on being placed in position, acts to remove surplusmaterial from the end of the setting after the jewel has been burnishedtherein. After the operation of my cutter, a tool V, carried by thefifth spindle, is by the partial rotation of the head placed in positionto turn the outside of the blank to size, which completes the operationsas far as the tools carried by the head are concerned.

Having thus described my invention, what I claim is 1. In combinationwith a cutter carried by a reciprocating part, a relatively stationarybetween said parts,

part, and connections whereby the movement of said reciprocating partwill cause the cutter to be moved to present a new cutting portion tothe work, substantially as and for the purpose specified.

2. I11 combination with a cutter, a pivoted arm or lever, connectionsbetween the latter and the cutter, a reciprocating part carrying bothcutter and lever, and a relatively fixed part to engage the lever, whensaid reciprocating part is moved, whereby said lever is operated to movethe cutter, substantially as and for the purpose shown.

3. In combination, a rotary cutter, a vibratory lever, worm-gearingbetween the latter and the cutter, and means for automatically movingthe lever, substantially as and for the purpose specified.

i. The combination of a spindle-carrying, rotatable head, alongitudinally movable spindle, a rotary cutter carried thereby, and apositive feed mechanism for turning the cutter each time the spindle isreciprocated, substantially as and for the purpose shown.

5. The combination of a spindle-carrying, rotatable head, alongitudinally movable spindle, a rotary cutter carried thereby, ratchetmechanism geared to the cutter, a lever to actuate said mechanism, and apart upon said head engaging such lever, substantially as and for thepurpose set forth.

6. The combination of a rotatable head, a jewel-holder, and a series ofspindles mounted in said head one of which is reciprocable, and carriesa rotary cutter that is provided with a ratchet and a positive feedmechanism for turning the cutter each time the spindle is reciprocated,substantially as and for the purpose described.

In testimony that I claim the foregoing I have hereunto set my hand this11th day of August, 1803.

CURTIS A. SMITH.

\Vitnesses Gno. S. PRINDLE, CARLos II. SMITH.

